521141 ÷ 3 
We want to figure out the number of times 521141 can be divided by 3.

Let's proceed to step 1:
When dividing 5 by 3, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 3

Advancing to step 2:
3 goes into 22 7 times with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtracting 21 from 22 leaves us with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 3

Moving on to step 3:
11 divided by 3 is 3 with a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 173.0
Subtract 9 from 11 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 3

Going ahead to step 4:
If we divide 21 by 3, we get 7 and a remainder of 0.
The next digit of our result is 7. 
Result so far: 1737.0
If we subtract 21 from 21, we get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 3

Let's proceed to step 5:
If we divide 4 by 3, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 17371.0
Subtracting 3 from 4 leaves us with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

Moving on to step 6:
3 goes into 11 3 times with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 173713.0
If we subtract 9 from 11, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
3 goes into 20 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 173713.6
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
If we divide 20 by 3, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 173713.66
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 173713.66, with a leftover of 0.002.